The work summarizes most current procedures for the synthesis of 1H- and 2H-indazoles printed during the previous five years. The procedures incorporate changeover metal catalyzed reactions, reductive cyclization reactions, and synthesis of 2H-indazoles through consecutive formation of C–N and N–N bonds with no catalyst and solvent from 2-azidobenzaldehydes and amines. https://tycoonchemstore.com/product-category/indazole-based/